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Normal temperature regenerant for asphalt pavement recycled mixture

A technology for asphalt pavement and recycled materials, which is used in plastic recycling, recycling technology, building insulation materials, etc., can solve the problem that the performance of recycled materials cannot meet the requirements of national standards, and achieve the goal of improving road performance, toughness, and low temperature characteristics. Effect

Active Publication Date: 2019-01-18
合肥孚成活性材料技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a normal temperature regenerant for asphalt pavement reclaimed material. By regenerating the normal temperature regenerated agent prepared by the present invention, the performance of the regenerated material can meet the current norms and standards and the national recycled asphalt concrete standard. The performance of the existing pavement recycled materials can not meet the requirements of the national standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The production process of mixing hot (warm) recycled asphalt mixture in the regenerant production plant:

[0036] According to the design requirements of the mix ratio, the pavement reclaimed materials are transported to the regeneration heating drum by type and heated to 130-140°C (SBS modified asphalt pavement reclaimed materials need to be heated to 150-160°C);

[0037] Spray the regenerant into the mixing tank and fully stir with the hot pavement reclaimed material. Stirring time: 30-90 seconds.

[0038] Add filler (mineral powder or cement) within 5 to 15 seconds after spraying the regenerant until the end of stirring.

[0039] The material is loaded on a truck and transported to the front field for paving operations.

Embodiment 2

[0041] A normal temperature regenerant for pavement recycling materials, comprising: heavy traffic asphalt, 60%, dioctadecyl / hexadecyl dimethyl-γ-hexaquaternary ammonium salt, 3.5%, fatty alcohol polyoxyethylene Ether, 2.0%, furfural oil, 2%, water, 29.0%, SBS latex, 2%, polyvinyl alcohol, 0.5%, polyisobutenylsuccinimide, 1%.

[0042] Preparation:

[0043] 1) Heat heavy traffic asphalt to 130°C, add furfural oil, stir evenly, and set aside;

[0044] 2) Heat the water to 75°C, dissolve polyvinyl alcohol, fatty alcohol polyoxyethylene ether, dioctadecyl / hexadecyldimethyl-ν-hexaquaternary ammonium salt, and polyisobutylene succinimide evenly , and control the temperature at 50-80°C;

[0045] 3), the asphalt of step 1) is mixed rapidly with the liquid formed in step 2) in the blender, and the passing grinder forms a uniform and stable suspension, which is fully stirred;

[0046] 4) Cool the material in step 3) to 50°C-55°C, add SBS latex, stir evenly, cool to room temperature a...

Embodiment 3

[0051] A normal temperature reclaimer for pavement reclaimed materials, comprising: heavy traffic asphalt: 45%, aromatics: 1.5%, water: 34.5.0%, CR latex: 3%, SBS latex: 5%, polyvinyl alcohol in weight percentage : 0.5%, polyisobutenyl succinimide: 1%, polyisobutylene: 3%, polyalkylphenol ethoxylate 1.0%, didodecanyldimethyl-γ-bisquaternary ammonium salt 2% 1. Behenyltrimethyl-γ-diquaternary ammonium salt 1.5%, 120# solvent naphtha: 1%, ethyl acetate: 1%.

[0052] Preparation:

[0053] 1) Heat the asphalt to 130°C, add aromatics, stir evenly, and set aside.

[0054] 2) Heat the water to 70°C-75°C, add polyvinyl alcohol, polyisobutenyl succinimide, polyisobutylene, polyalkylphenol polyoxyethylene ether, didodecanyldimethyl-γ-bis Quaternary ammonium salt and docosyltrimethyl-γ-diquaternary ammonium salt are uniformly soluble in each other, and the temperature is controlled at 50-80°C;

[0055] 3) The asphalt of step 1) is mixed rapidly with the liquid formed in step 2) in the...

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Abstract

The invention discloses a normal temperature regenerant for an asphalt pavement recycled mixture and relates to the technical field of production of auxiliary materials for processing asphalt. The regenerant is prepared from the following component in percentage by weight: 20 to 70 percent of heavy traffic paving asphalt, 2 to 10 percent of a latex modifier, 2 to 9 percent of a surfactant, 15 to 40 percent of water, 0 to 5 percent of an organic aid and 0 to 3 percent of aromatic oil. The normal temperature regenerant prepared by the invention is used for recycling a pavement recycled mixture;the performance of the obtained recycled mixture meets existing specifications and standards and the standards of national renewable asphalt concrete; the problem that the performance of an existing pavement recycled mixture cannot meet national standard requirements at present is solved.

Description

technical field [0001] The invention belongs to the technical field of manufacturing auxiliary materials for asphalt processing, and in particular relates to a normal-temperature regenerant for asphalt pavement recycled materials. Background technique [0002] As the peak period of my country's highway construction has passed, road maintenance has entered the normal state. Asphalt pavement is the main form of highway pavement. Due to the particularity of traffic load in our country, the service life of high-grade highways is generally 6 to 10 years, and other roads are generally 5 to 8 years, that is, it enters major and medium repairs (remove the pavement surface layer or Milling, resurfacing, medium repair, only the upper layer is milled, major repair, all the upper, middle and lower layers are milled). The milled material (RAP) was initially discarded as garbage; later, in order to utilize RAP, some research institutes researched and buried it as a sub-base material unde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/28C08J11/18C08J11/24C08L95/00
CPCC08J11/18C08J11/24C08J11/28C08J2395/00Y02W30/62
Inventor 李国涛
Owner 合肥孚成活性材料技术开发有限公司
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